Virtual Labs

Study and operation of Magnetic Levitation

1. Which of the following is a correct statement?

a: PI Controllers improve steady state response Explanation

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b: PD controllers improve transient response Explanation

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c: All of the above Explanation

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d: None of the above Explanation

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2. What is the relation between gain (g) and proportional band (p) in control system

a: g = 100/p Explanation

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b: g = p Explanation

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c: g = p/100 Explanation

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d: None of the above Explanation

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3. Which of the following is an example of actuator?

a: Microphone Explanation

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b: Solenoid Explanation

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c: Micro switch Explanation

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d: None of the above Explanation

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4. What is magnetic levitation?

a: The use of magnetic fields to cause a train to rise above the rails Explanation

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b: The use of fields to stretch a train above the rails Explanation

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c: To use of fields to shrink a train above the rails Explanation

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d: None of the above Explanation

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5. A disadvantage of implementing MAGLEV systems is, it can be

a: Not safe Explanation

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b: Not environmental friendly Explanation

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c: Costly Explanation

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d: None of the above Explanation

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6. Increasing the proportional gain in PID block will __________ the rise time

a: Increase Explanation

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b: Not affect Explanation

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c: Decrease Explanation

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d: None of the above Explanation

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7. A proportional band setting of 175% is equivalent to a gain setting of __

a: 175 Explanation

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b: 0.756 Explanation

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c: 0.571 Explanation

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d: 1.32 Explanation

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8. Which one of the following controllers increases the order of the system by one?

a: P controller Explanation

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b: PI controller Explanation

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c: Both the above Explanation

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d: None of the above Explanation

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9. The magnetic levitation is __________

a: A non contact technology Explanation

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b: Not a non contact technology Explanation

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c: Both of the above Explanation

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d: None of the above Explanation

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10. Strength of an electromagnet can be increased by

a: Increasing the cross-sectional area Explanation

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b: Increasing the number of turns Explanation

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c: Increasing current supply Explanation

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d: All of the above Explanation

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